intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 278 insertions, 0 deletions

diff --git a/contrib/libs/curl/lib/netrc.c b/contrib/libs/curl/lib/netrc.c
new file mode 100644
index 0000000000..13610bb070
--- /dev/null
+++ b/contrib/libs/curl/lib/netrc.c
@@ -0,0 +1,278 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+#ifndef CURL_DISABLE_NETRC
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+
+#include <curl/curl.h>
+#include "netrc.h"
+#include "strtok.h"
+#include "strcase.h"
+
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
+#include "memdebug.h"
+
+/* Get user and password from .netrc when given a machine name */
+
+enum host_lookup_state {
+  NOTHING,
+  HOSTFOUND,    /* the 'machine' keyword was found */
+  HOSTVALID     /* this is "our" machine! */
+};
+
+#define NETRC_FILE_MISSING 1
+#define NETRC_FAILED -1
+#define NETRC_SUCCESS 0
+
+/*
+ * Returns zero on success.
+ */
+static int parsenetrc(const char *host,
+                      char **loginp,
+                      char **passwordp,
+                      bool *login_changed,
+                      bool *password_changed,
+                      char *netrcfile)
+{
+  FILE *file;
+  int retcode = NETRC_FILE_MISSING;
+  char *login = *loginp;
+  char *password = *passwordp;
+  bool specific_login = (login && *login != 0);
+  bool login_alloc = FALSE;
+  bool password_alloc = FALSE;
+  enum host_lookup_state state = NOTHING;
+
+  char state_login = 0;      /* Found a login keyword */
+  char state_password = 0;   /* Found a password keyword */
+  int state_our_login = FALSE;  /* With specific_login, found *our* login
+                                   name */
+
+  DEBUGASSERT(netrcfile);
+
+  file = fopen(netrcfile, FOPEN_READTEXT);
+  if(file) {
+    char *tok;
+    char *tok_buf;
+    bool done = FALSE;
+    char netrcbuffer[4096];
+    int  netrcbuffsize = (int)sizeof(netrcbuffer);
+
+    while(!done && fgets(netrcbuffer, netrcbuffsize, file)) {
+      tok = strtok_r(netrcbuffer, " \t\n", &tok_buf);
+      if(tok && *tok == '#')
+        /* treat an initial hash as a comment line */
+        continue;
+      while(tok) {
+
+        if((login && *login) && (password && *password)) {
+          done = TRUE;
+          break;
+        }
+
+        switch(state) {
+        case NOTHING:
+          if(strcasecompare("machine", tok)) {
+            /* the next tok is the machine name, this is in itself the
+               delimiter that starts the stuff entered for this machine,
+               after this we need to search for 'login' and
+               'password'. */
+            state = HOSTFOUND;
+          }
+          else if(strcasecompare("default", tok)) {
+            state = HOSTVALID;
+            retcode = NETRC_SUCCESS; /* we did find our host */
+          }
+          break;
+        case HOSTFOUND:
+          if(strcasecompare(host, tok)) {
+            /* and yes, this is our host! */
+            state = HOSTVALID;
+            retcode = NETRC_SUCCESS; /* we did find our host */
+          }
+          else
+            /* not our host */
+            state = NOTHING;
+          break;
+        case HOSTVALID:
+          /* we are now parsing sub-keywords concerning "our" host */
+          if(state_login) {
+            if(specific_login) {
+              state_our_login = strcasecompare(login, tok);
+            }
+            else if(!login || strcmp(login, tok)) {
+              if(login_alloc) {
+                free(login);
+                login_alloc = FALSE;
+              }
+              login = strdup(tok);
+              if(!login) {
+                retcode = NETRC_FAILED; /* allocation failed */
+                goto out;
+              }
+              login_alloc = TRUE;
+            }
+            state_login = 0;
+          }
+          else if(state_password) {
+            if((state_our_login || !specific_login)
+                && (!password || strcmp(password, tok))) {
+              if(password_alloc) {
+                free(password);
+                password_alloc = FALSE;
+              }
+              password = strdup(tok);
+              if(!password) {
+                retcode = NETRC_FAILED; /* allocation failed */
+                goto out;
+              }
+              password_alloc = TRUE;
+            }
+            state_password = 0;
+          }
+          else if(strcasecompare("login", tok))
+            state_login = 1;
+          else if(strcasecompare("password", tok))
+            state_password = 1;
+          else if(strcasecompare("machine", tok)) {
+            /* ok, there's machine here go => */
+            state = HOSTFOUND;
+            state_our_login = FALSE;
+          }
+          break;
+        } /* switch (state) */
+
+        tok = strtok_r(NULL, " \t\n", &tok_buf);
+      } /* while(tok) */
+    } /* while fgets() */
+
+    out:
+    if(!retcode) {
+      /* success */
+      *login_changed = FALSE;
+      *password_changed = FALSE;
+      if(login_alloc) {
+        if(*loginp)
+          free(*loginp);
+        *loginp = login;
+        *login_changed = TRUE;
+      }
+      if(password_alloc) {
+        if(*passwordp)
+          free(*passwordp);
+        *passwordp = password;
+        *password_changed = TRUE;
+      }
+    }
+    else {
+      if(login_alloc)
+        free(login);
+      if(password_alloc)
+        free(password);
+    }
+    fclose(file);
+  }
+
+  return retcode;
+}
+
+/*
+ * @unittest: 1304
+ *
+ * *loginp and *passwordp MUST be allocated if they aren't NULL when passed
+ * in.
+ */
+int Curl_parsenetrc(const char *host,
+                    char **loginp,
+                    char **passwordp,
+                    bool *login_changed,
+                    bool *password_changed,
+                    char *netrcfile)
+{
+  int retcode = 1;
+  char *filealloc = NULL;
+
+  if(!netrcfile) {
+    char *home = NULL;
+    char *homea = curl_getenv("HOME"); /* portable environment reader */
+    if(homea) {
+      home = homea;
+#if defined(HAVE_GETPWUID_R) && defined(HAVE_GETEUID)
+    }
+    else {
+      struct passwd pw, *pw_res;
+      char pwbuf[1024];
+      if(!getpwuid_r(geteuid(), &pw, pwbuf, sizeof(pwbuf), &pw_res)
+         && pw_res) {
+        home = pw.pw_dir;
+      }
+#elif defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
+    }
+    else {
+      struct passwd *pw;
+      pw = getpwuid(geteuid());
+      if(pw) {
+        home = pw->pw_dir;
+      }
+#endif
+    }
+
+    if(!home)
+      return retcode; /* no home directory found (or possibly out of
+                         memory) */
+
+    filealloc = curl_maprintf("%s%s.netrc", home, DIR_CHAR);
+    if(!filealloc) {
+      free(homea);
+      return -1;
+    }
+    retcode = parsenetrc(host, loginp, passwordp, login_changed,
+                         password_changed, filealloc);
+    free(filealloc);
+#ifdef WIN32
+    if(retcode == NETRC_FILE_MISSING) {
+      /* fallback to the old-style "_netrc" file */
+      filealloc = curl_maprintf("%s%s_netrc", home, DIR_CHAR);
+      if(!filealloc) {
+        free(homea);
+        return -1;
+      }
+      retcode = parsenetrc(host, loginp, passwordp, login_changed,
+                           password_changed, filealloc);
+      free(filealloc);
+    }
+#endif
+    free(homea);
+  }
+  else
+    retcode = parsenetrc(host, loginp, passwordp, login_changed,
+                         password_changed, netrcfile);
+  return retcode;
+}
+
+#endif